You are reading "If On a Winter's Day a Traveller", perhaps online, or on your phone, during your commute. The train, the bus, the streetcar is quite crowded, jostling and rattling around as you get your head into the poem.
What lies ahead? The curve of road or track leads on to darkness, mystery, confused deep tunnels, full of dusty lights, or intersections where the traffic snarls into a knot. There's no way out but forward, so you go, in time.
The screen is dark, you've been distracted, and now the poem is done.
Riff on Calvino's "If On a Winter's Night a Traveller", a novel that describes the experience of reading it.